(30 Nov 15) p2.2, Fig 2.3.
The diode in the figure has the battery polarity wrong.
The correct figure is shown below. (27Sept09)

p2.2, right col, 0.8
inches down from top of text: "collector" becomes
"collector" (24Feb03)

p2.4, left col, 2.1 inches down from text
top. The bxIb should be (beta)xIb where (beta)
is the Greek letter and the b in Ib is a subscript (26Mar03)

p2.4, left col, 3.2 inches down from
top of text: This should be ".....11.4 V across 100
k-Ohm, or 114 uA. If
transistor beta=100, the collector current is 11.4 mA."
Error was in the m and u related to milli and micro amp. (24Feb03)
p2.4, right col, 4 lines up from text
bottom. Replace mF with uF. (microfarad) (24Feb03)p2.5, right col, 0.8 inch down from text
top: replace "N-Channel" with "N-channel"
(9Dec03)

p2.6, left col, almost
at bottom: That current is 752 uA, not mA. Also,
base current is 19 uA, not mA. (24Feb03)

p2.6, Eq 2.13.
There should be a minus sign ahead of this equation, for gm
is a positive value and Vp is negative. (8May07)

p2.6, JFET analysis, General
comments: The equations that describe
JFET current contain the term Vsg. This is the source
voltage with respect to the gate, or Vs-Vg.
Fig 2.19 includes an equation that
is called the "Basic FET equation." This has a
positive sign within the bracket. If the equation had
been written in terms of Vgs (gate voltage with respect to
the source) there would be a negative sign. The key
points to keep in mind are that Vp is negative (for an N
channel depletion mode JFET) and that Vgs=-Vsg.
Here's a summary of useful JFET equations. This is clarification info. It is
not an errata.8May07

p2.7, left col, 0.5
inch down from text top. Change Vbe in the equation
to be a simple Vb. Either would work in the case of
Fig 2.21A. But Figures 2.21C and D are both
models that include the bias current dependent emitter
resistance re. Fig 2.21B relates to biasing
rather than signal amplification. (6Aug04)

p2.20,
middle col, 1.2 inches down from top of text: "some of
he" becomes "some of the" (24Feb03) p2.21, col 1, 3.0
inches down from text top. Replace "the earlier
equation" with "equation 2.35" (8Feb04) p2.21, right col,
1.9 inches up from text bottom: replace "f1, f1, and f2"
with "f1, f1 again, and f2" where all of these numbers are
subscripts. Analytically, this means is that IMD order is
the sum of the exponents in the related equations. (9Dec03)

p2.36, Fig 2.97 Caption.
Change the units for L1, L2, and L3 from mH to uH.
(While L1 and L2 are correct in the Third Printing, L3 is
still shown as 15 mH. It should be 15 microhenry.
(17April9)

p2.36, bottom of text and p2.37
text top: The paragraph now reads: "The
amplifier is set up for Class-C operation, although it could be
modified for class AB linear operation with little other change
required. Linear biasing is discussed below."
Change the paragraph to become "The amplifier is
set up for Class C operation. It is easily modified for
AB linear service with the methods outlined below."
(9Dec03)

p2.37, right column,
3.7 inches down from text top: replace "thermal
communications" with "thermal contact" (9Dec03)
p2.37, right col, 3.8 inches down from text top:
Replace "Some designs us a ...." with "Some designs
use a ....."(17April09)

p2.39,
right column, 0.9 inches up from text bottom: replace
"network the Beginner's" with "network for the Beginner's"
(9Dec03)